[Milsurplus] RF Ammeter

[WA5CAB at cs.com]

What color is the box?  Can you find printed anywhere on the scale plate 
"IF-n" or "IS-n" where "n" is a 1, 2 or 3-digit number?

In a message dated 9/18/2010 3:12:11 PM Central Daylight Time, 
ianmwilson73 at gmail.com writes: 
> Got this, mounted in a small box, wondered what it originally came
> from, and useful frequency range:
> 
> R-F Amperes, FSD 3.0, MR35W003RFAA
> GE Type DO-44 Model AKN56.1

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480